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Cryptography FAQ

 

 

1. What is Encryption?


2. Why Does the United States Control Encryption Exports?


3. Are Imports of Encryption Controlled?


4. Is the Use of Encryption within the United States Controlled?


5. Can I Send an Encrypted Message to Someone Outside the United States?


6. Where Can I Obtain a License to Export?


7. What Constitutes an "Export"?


8.
Can You Distribute Encryption Software via the Internet?


9. Can’t I Simply Place My Encryption Software in the Public Domain, and Avoid Export Controls?


10.Do I Need a License to Take My Laptop Computer with Encryption Software on My Next Business Trip Outside the United States?


What is Encryption? Encryption is a method of making information secret, so that only a person who knows the method can understand or decrypt the information. For a thorough review of encryption methods, see Bruce Schneier’s web page, the author of Applied Cryptography.

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Why Does the United States Control Encryption Exports? The U.S. Government uses encryption to secure military, diplomatic and intelligence information, and wishes to deny others the ability to secure their information using American products, except under license. In addition, law enforcement (the Department of Justice’s Federal Bureau of Investigation) is concerned that the widespread use of encryption will make it more difficult to conduct electronic surveillance in the future.

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Are Imports of Encryption Controlled? No. The United States does not control the importation of encryption at this time. However, FBI documents obtained by the Electronic Privacy Information Center under the Freedom of Information Act state that "Technical solutions, such as they are, will only work if they are incorporated into all encryption products. To ensure that this occurs, legislation mandating the use of Government approved encryption products or adherence to Government encryption criteria is required."

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Is the Use of Encryption within the United States Controlled? No. However, the U.S. government is trying to influence the market toward deployment of products which provide government access, through imposition of export controls and development of a Federal Information Processing Standard for government procurement. Link to The Technical Advisory Committee to Develop a Federal Information Processing Standard for the Federal Key Management Infrastructure.

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Can I Send an Encrypted Message to Someone Outside the United States? U.S. law does not restrict the transmission of information, merely because it has been encrypted. However, the information itself may require a license, under U.S. export control laws and regulations. For example, you may encrypt and export the Bible to anyone (even Castro), but you may not encrypt and export classified information related to nuclear weapons to anyone (even a Canadian) without a license.

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Where Can I Obtain a License to Export? The Department of Commerce’s Bureau of Industry and Security accepts applications for licenses to export encryption products and technologies. The Departments of Defense, Justice and State also have the right to review license applications.

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What Constitutes an "Export"? Physical or electronic transfer of encryption hardware, software or information outside the United States constitutes an export. So does release within the United States to an embassy of a foreign government.

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Can You Distribute Encryption Software via the Internet? You may distribute encryption software via the Internet, provided that you take "adequate precautions" to ensure that the software is not exported contrary to U.S. law. Such precautions include (1) a warning to the person wishing to download the software that it is subject to U.S. export controls, (2) a commitment on the part of the person that the software will not be exported contrary to U.S. law, and (3) a procedure for verifying that the host computer is located within the United States.

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Can’t I Simply Place My Encryption Software in the Public Domain, and Avoid Export Controls? The U.S. Government threatened to indict Philip Zimmermann on criminal charges when his encryption program, Pretty Good Privacy, was posted on the Internet without precautions. Daniel Bernstein, Philip Karn and Peter Junger are challenging the constitutionality of export controls on encryption software.

For more information on these three legal cases, follow these links: Bernstein v. U.S. Dept of State, Karn v. U.S. Dept. of State, and Junger v. U.S. Dept. of State.

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Do I Need a License to Take My Laptop Computer with Encryption Software on My Next Business Trip Outside the United States? Probably not. Most temporary exports by business travelers qualify for either License Exception TMP or License Exception BAG of the Export Administration Regulations. However, you may wish to review the requirements for the use of these License Exceptions. Also, the following excerpt of an unpublished letter on Temporary Exports of Encryption Software from Larry Christensen, Director of the Regulatory Policy Division provide some more information:

"The tools of trade authority at §740.9(a)(2)(i) of the EAR authorizes the temporary export of tools of the trade for any lawful purpose in usual and reasonable quantities by employees of the exporter. However, for Country Group D:1, this authority is limited to equipment necessary to commission or service goods. In today's international environment, we believe encryption software is necessary to service a lawfully exported laptop computer. Such software may be exported when contained in a laptop computer that itself is lawfully exported and so long as all the other conditions of §740.9(a)(2)(i) are met. Please note that the tools of the trade authority under License Exception TMP is not available for exports to Country Group E:1, Supplement No.1 to Part 740 of the EAR. As you know, the tools of trade authority under License Exception BAG authorizes the export of encryption software when owned by the individual and when the terms of §740.14(b)(4) of the EAR are met."

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